This content originally appeared on DEV Community and was authored by Keme Kenneth
Ever deployed your app to AWS Lambda or thought about doing it? Now it’s easier than ever with the new AWS Lambda Deploy GitHub Action.
In the past, deploying to Lambda meant writing long AWS CLI commands in your workflow or wrestling with complex CloudFormation templates. But now, with just a few lines of YAML, you can ship your code directly to AWS Lambda.
The AWS Lambda Deploy GitHub Action is an official tool from the AWS team, available right in the GitHub Marketplace. Since GitHub Actions is already one of the most user-friendly CI/CD tools, this new integration makes deploying to Lambda seamless.
How It Works
To get started, all you need is:
AWS credentials configured using the configure-aws-credentials action.
The aws-lambda-deploy action with just a handful of required inputs.
You can deploy any runtime supported by Lambda - Node.js, Python, Java, .NET, or Ruby.
Example Workflow
Here’s a simple workflow that deploys a Python app to Lambda whenever you push code:
name: Deploy to AWS Lambda
on: push
permissions:
contents: read
jobs:
lambda:
runs-on: ubuntu-latest
steps:
- name: Checkout
uses: actions/checkout@v3
- name: Configure AWS credentials
uses: aws-actions/configure-aws-credentials@v4
with:
aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
aws-region: us-east-1
- name: Deploy Lambda Function
uses: aws-actions/aws-lambda-deploy@v1.1.0
with:
function-name: my-moon-app
code-artifacts-dir: .
handler: app.handler
runtime: python3.10
role: arn:aws:iam::123456789012:role/my-lambda-role
This workflow runs automatically whenever you push code or commit to your repository.
Key Parameters
function-name – The name of your Lambda function
code-artifacts-dir – Directory of your app’s code (use . if it’s in the root)
handler – The entry point (fileName.functionName, e.g., app.handler)
runtime – The runtime your app uses (e.g., python3.10, nodejs18.x)
role – IAM role ARN for Lambda execution
The action also supports advanced options like package-type, image-uri, memory-size, timeout, environment, and architectures.
See the full parameter list 👉 here
.
Security Best Practice
⚠️ Never hardcode your AWS credentials in your workflow.
Instead, store them as GitHub secrets and reference them like this:
aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
Closing
With the AWS Lambda Deploy GitHub Action, deploying serverless apps is now as easy as pushing code. It’s fast, simple, and officially supported by AWS—making it a perfect fit for modern CI/CD pipelines.
This content originally appeared on DEV Community and was authored by Keme Kenneth
Keme Kenneth | Sciencx (2025-08-28T15:41:09+00:00) 🚀 Deploy to AWS Lambda in Minutes with GitHub Actions. Retrieved from https://www.scien.cx/2025/08/28/%f0%9f%9a%80-deploy-to-aws-lambda-in-minutes-with-github-actions/
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